Electronic device and method for wired and wireless charging in electronic device

ABSTRACT

Electronic device and method for driving electronic device. The electronic device includes battery, power management integrated circuit (PMIC) configured to control charging status of battery, coil, wireless power circuit electrically connected to coil, communication circuit electrically connected to coil, and processor, wherein processor is configured to, when the wireless power circuit is in a transmission (Tx) mode, transmit a wireless power signal through the coil by using the wireless power circuit, and transmit a signal obtained by frequency shift keying (FSK)-modulating a transmission device parameter by using the communication circuit, to an external electronic device through the coil, and when the wireless power circuit is in a reception (Rx) mode, receive wireless power by using the wireless power circuit to charge the battery, and transmit a signal obtained by amplitude shift keying (ASK)-modulating a reception device parameter by using the communication circuit, to the external electronic device through the coil.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is based on and claims priority under 35 U.S.C. § 119to Korean Patent Application No. 10-2018-0122641, filed on Oct. 15,2018, in the Korean Intellectual Property Office, the disclosure ofwhich is incorporated by reference herein in its entirety.

BACKGROUND 1) Field

The disclosure relates generally to an electronic device and a methodfor wired and wireless charging in an electronic device.

2) Description of Related Art

Electronic devices may be charged by wire and/or wirelessly.

For example, a conventional electronic device may be supplied withelectric power by wire from a wired charging device to charge a batterywhen the wired charging device is connected to the electronic device,and may cause a current to flow through a coil in a magnetic inductionscheme to charge the battery when a wireless charging device isconnected to the electronic device.

In a conventional electronic device, a charging circuit of a battery isconfigured simply to receive a charging current from a wired chargingdevice to charge the battery or charge the battery from an inductioncurrent generated by a wireless charging device, but electric power ofthe battery cannot be supplied to an external device.

SUMMARY

An aspect of the disclosure provides an electronic device and a methodcapable of transmitting electric power stored in a battery to anexternal device.

According to an aspect of the disclosure, an electronic device isprovided. The electronic device includes a battery, a power managementintegrated circuit (PMIC) configured to control a charging status of thebattery, a coil, a wireless power circuit electrically connected to thecoil, a communication circuit electrically connected to the coil, and aprocessor, wherein the processor is configured to, when the wirelesspower circuit is in a transmission (Tx) mode, transmit a wireless powersignal through the coil by using the wireless power circuit, andtransmit a signal obtained by frequency shift keying (FSK)-modulating atransmission device parameter by using the communication circuit, to anexternal electronic device through the coil, and when the wireless powercircuit is in a reception (Rx) mode, receive wireless power by using thewireless power circuit to charge the battery, and transmit a signalobtained by amplitude shift keying (ASK)-modulating a reception deviceparameter by using the communication circuit, to the external electronicdevice through the coil.

According to another aspect of the disclosure, a method for driving anelectronic device is provided. The method includes, when a wirelesspower circuit is in a Tx mode, transmitting a wireless power signalthrough a coil by using the wireless power circuit, and transmitting asignal obtained by FSK-modulating a transmission device parameter byusing a communication circuit, to an external electronic device throughthe coil, and when the wireless power circuit is in an Rx mode,receiving wireless power by using the wireless power circuit to chargethe battery, and transmitting a signal obtained by ASK-modulating areception device parameter by using the communication circuit, to theexternal electronic device through the coil.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features, and advantages of certainembodiments of the disclosure will be more apparent from the followingdescription taken in conjunction with the accompanying drawings, inwhich:

FIG. 1 is a block diagram of an electronic device in a networkenvironment according to an embodiment;

FIG. 2 is a block diagram of a power management module and a batteryaccording to an embodiment;

FIGS. 3A and 3B are an illustration and a block diagram of wirelesslysharing electric power between a first electronic device and a secondelectronic device according to an embodiment;

FIG. 4 is a cross-sectional view of an electronic device according to anembodiment;

FIG. 5 is a block diagram a charging circuit in an electronic deviceaccording to an embodiment;

FIG. 6A is an illustration of wirelessly charging a wearable device byusing a wireless charging function of an electronic device according toan embodiment;

FIG. 6B is an illustration of wirelessly charging a wearable device byusing a wireless charging function of an electronic device according toan embodiment;

FIG. 7A is an illustration of wirelessly charging an external electronicdevice by using a wireless charging function of an electronic deviceaccording to an embodiment;

FIG. 7B is an illustration of wirelessly charging an external electronicdevice by using a wireless charging function of an electronic deviceaccording to an embodiment;

FIG. 8 is a block diagram of a wireless power circuit of an electronicdevice in a Tx mode according to an embodiment;

FIG. 9 is a block diagram of a wireless power circuit of an electronicdevice in an Rx mode according to an embodiment; and

FIG. 10 is a flowchart of a method of an electronic device according toan embodiment.

DETAILED DESCRIPTION

FIG. 1 is a block diagram of an electronic device 101 in a networkenvironment 100 according to an embodiment.

Referring to FIG. 1, the electronic device 101 in the networkenvironment 100 may communicate with an electronic device 102 via afirst network 198 (e.g., a short-range wireless communication network)or an electronic device 104 or a server 108 via a second network 199(e.g., a long-range wireless communication network). The electronicdevice 101 may communicate with the electronic device 104 via the server108. The electronic device 101 includes a processor 120, memory 130, aninput device 150, a sound output device 155, a display device 160, anaudio module 170, a sensor module 176, an interface 177, a connectionterminal 178, a haptic module 179, a camera module 180, a powermanagement module 188, a battery 189, a communication module 190, asubscriber identification module (SIM) 196, and an antenna module 197.At least one (e.g., the display device 160 or the camera module 180) ofthe components may be omitted from the electronic device 101 or one ormore other components may be added in the electronic device 101. Some ofthe components may be implemented as single integrated circuitry. Forexample, the sensor module 176 (e.g., a fingerprint sensor, an irissensor, or an illuminance sensor) may be implemented as embedded in thedisplay device 160 (e.g., a display).

The processor 120 may execute software (e.g., a program 140) to controlat least one other component (e.g., a hardware or a software component)of the electronic device 101 coupled with the processor 120, and mayperform various data processing or a computation. As at least part ofthe data processing or the computation, the processor 120 may load acommand or data received from another component (e.g., the sensor module176 or the communication module 190) in volatile memory 132, process thecommand or the data stored in the volatile memory 132, and storeresulting data in non-volatile memory 134. The processor 120 includes amain processor 121 (e.g., a central processing unit (CPU) or anapplication processor (AP)), and an auxiliary processor 123 (e.g., agraphics processing unit (GPU), an image signal processor (ISP), asensor hub processor, or a communication processor (CP)) that isoperable independently from, or in conjunction with, the main processor121. Additionally, or alternatively, the auxiliary processor 123 may beadapted to consume less power than the main processor 121, or to bespecific to a specified function. The auxiliary processor 123 may beimplemented as separate from, or as part of, the main processor 121.

The auxiliary processor 123 may control at least some of functions orstates related to at least one component (e.g., the display device 160,the sensor module 176, or the communication module 190) among thecomponents of the electronic device 101, instead of the main processor121 while the main processor 121 is in an inactive (e.g., sleep) state,or together with the main processor 121 while the main processor 121 isin an active state (e.g., executing an application). The auxiliaryprocessor 123 (e.g., an image signal processor or a CP) may beimplemented as part of another component (e.g., the camera module 180 orthe communication module 190) functionally related to the auxiliaryprocessor 123.

The memory 130 may store various data used by at least one component(e.g., the processor 120 or the sensor module 176) of the electronicdevice 101. The various data may include software (e.g., the program140) and input data or output data for a command related thereto. Thememory 130 may include the volatile memory 132 or the non-volatilememory 134.

The program 140 may be stored in the memory 130 as software, andincludes, for example, an operating system (OS) 142, middleware 144, andan application 146.

The input device 150 may receive a command or data to be used by anothercomponent (e.g., the processor 120) of the electronic device 101, fromthe outside (e.g., a user) of the electronic device 101. The inputdevice 150 may include, for example, a microphone, a mouse, a keyboard,or a digital pen (e.g., a stylus pen).

The sound output device 155 may output sound signals to the outside ofthe electronic device 101. The sound output device 155 may include, forexample, a speaker or a receiver. The speaker may be used for generalpurposes, such as playing multimedia or a record, and the receiver maybe used for incoming calls. The receiver may be implemented as separatefrom, or as part of, the speaker.

The display device 160 may visually provide information to the outside(e.g., a user) of the electronic device 101. The display device 160 mayinclude, for example, a display, a hologram device, or a projector andcontrol circuitry to control a corresponding one of the display, thehologram device, and the projector. The display device 160 may includetouch circuitry adapted to detect a touch, or sensor circuitry (e.g., apressure sensor) adapted to measure an intensity of a force incurred bythe touch.

The audio module 170 may convert a sound into an electrical signal andvice versa. The audio module 170 may obtain a sound via the input device150, or output a sound via the sound output device 155 or a headphone ofan external electronic device (e.g., an electronic device 102) directly(e.g., wiredly) or wirelessly coupled with the electronic device 101.

The sensor module 176 may detect an operational state (e.g., power ortemperature) of the electronic device 101 or an environmental state(e.g., a state of a user) external to the electronic device 101, andthen generate an electrical signal or data value corresponding to thedetected state. The sensor module 176 may include, for example, agesture sensor, a gyro sensor, an atmospheric pressure sensor, amagnetic sensor, an acceleration sensor, a grip sensor, a proximitysensor, a color sensor, an infrared (IR) sensor, a biometric sensor, atemperature sensor, a humidity sensor, or an illuminance sensor.

The interface 177 may support one or more specified protocols to be usedfor the electronic device 101 to be coupled with the external electronicdevice (e.g., the electronic device 102) directly (e.g., wiredly) orwirelessly. The interface 177 may include, for example, a highdefinition multimedia interface (HDMI), a universal serial bus (USB)interface, a secure digital (SD) card interface, or an audio interface.

The connecting terminal 178 may include a connector via which theelectronic device 101 may be physically, connected with the externalelectronic device (e.g., the electronic device 102). The connectingterminal 178 may include, for example, an HDMI connector, a USBconnector, an SD card connector, or an audio connector (e.g., aheadphone connector).

The haptic module 179 may convert an electrical signal into a mechanicalstimulus (e.g., a vibration or a movement) or an electrical stimuluswhich may be recognized by a user via a tactile sensation or akinesthetic sensation. The haptic module 179 may include, for example, amotor, a piezoelectric element, or an electric stimulator.

The camera module 180 may capture a still image or moving images. Thecamera module 180 may include one or more lenses, image sensors, imagesignal processors, or flashes.

The power management module 188 may manage power supplied to theelectronic device 101. The power management module 188 may beimplemented as at least part of, for example, a PMIC.

The battery 189 may supply power to at least one component of theelectronic device 101. The battery 189 may include, for example, aprimary cell which is not rechargeable, a secondary cell which isrechargeable, or a fuel cell.

The communication module 190 may support establishing a direct (e.g.,wired) communication channel or a wireless communication channel betweenthe electronic device 101 and the electronic device 102, the electronicdevice 104, or the server 108 and performing communication via theestablished communication channel. The communication module 190 mayinclude one or more communication processors that are operableindependently from the processor 120 (e.g., the AP) and supports adirect (e.g., wired) communication or a wireless communication. Thecommunication module 190 may include a wireless communication module 192(e.g., a cellular communication module, a short-range wirelesscommunication module, a global navigation satellite system (GNSS)communication module), or a wired communication module 194 (e.g., alocal area network (LAN) communication module or a power linecommunication (PLC) module). A corresponding one of these communicationmodules may communicate with the external electronic device via thefirst network 198 (e.g., a short-range communication network, such asBluetooth™, Wi-Fi direct, or a standard of the Infrared Data Association(IrDA)) or the second network 199 (e.g., a long-range communicationnetwork, such as a cellular network, the Internet, or a computer network(e.g., a LAN or a wide area network (WAN)). These various types ofcommunication modules may be implemented as a single component (e.g., asingle integrated circuit (IC) or chip), or may be implemented as multicomponents (e.g., multi chips) separate from each other. The wirelesscommunication module 192 may identify and authenticate the electronicdevice 101 in a communication network, such as the first network 198 orthe second network 199, using subscriber information (e.g., aninternational mobile subscriber identity WSW stored in the SIM 196.

The antenna module 197 may transmit or receive a signal or power to orfrom the outside (e.g., the external electronic device) of theelectronic device 101. The antenna module 197 may include an antennaincluding a radiating element composed of a conductive material or aconductive pattern formed in or on a substrate (e.g., a printed circuitboard (PCB)). The antenna module 197 may include a plurality ofantennas. In such a case, at least one antenna appropriate for acommunication scheme used in the communication network, such as thefirst network 198 or the second network 199, may be selected, forexample, by the communication module 190 (e.g., the wirelesscommunication module 192) from the plurality of antennas. The signal orthe power may then be transmitted or received between the communicationmodule 190 and the external electronic device via the selected at leastone antenna. Another component (e.g., a radio frequency integratedcircuit (RFIC)) other than the radiating element may be additionallyformed as part of the antenna module 197.

At least some of the above-described components may be coupled mutuallyand communicate signals (e.g., commands or data) therebetween via aninter-peripheral communication scheme (e.g., a bus, a general purposeinput and output (GPIO), a serial peripheral interface (SPI), or amobile industry processor interface (MIPI)).

Commands or data may be transmitted or received between the electronicdevice 101 and the external electronic device 104 via the server 108coupled with the second network 199. Each of the electronic devices 102and 104 may be a device of a same type as, or a different type from, theelectronic device 101. All or some of operations to be executed at theelectronic device 101 may be executed at one or more of the externalelectronic device 102, the electronic device 104, or the server 108. Forexample, if the electronic device 101 should perform a function or aservice automatically, or in response to a request from a user oranother device, the electronic device 101, instead of, or in additionto, executing the function or the service, may request the one or moreexternal electronic devices to perform at least part of the function orthe service. The one or more external electronic devices receiving therequest may perform the at least part of the function or the servicerequested, or an additional function or an additional service related tothe request, and transfer the outcome to the electronic device 101. Theelectronic device 101 may provide the outcome, with or without furtherprocessing of the outcome, as at least part of a reply to the request.To that end, a cloud computing, a distributed computing, or aclient-server computing technology may be used, for example.

FIG. 2 is a block diagram 200 illustrating the power management module188 and the battery 189 according to an embodiment.

Referring to FIG. 2, the power management module 188 includes chargingcircuitry 210, a power adjuster 220, and a power gauge (or fuel gauge)230. The charging circuitry 210 may charge the battery 189 by usingpower supplied from an external power source outside the electronicdevice 101. The charging circuitry 210 may select a charging scheme(e.g., normal charging or quick charging) based at least in part on atype of the external power source (e.g., a power outlet, a USB, orwireless charging), magnitude of power suppliable from the externalpower source (e.g., about 20 Watts or more), or an attribute of thebattery 189, and may charge the battery 189 using the selected chargingscheme. The external power source may be connected with the electronicdevice 101, for example, directly via the connecting terminal 178 orwirelessly via the antenna module 197.

The power adjuster 220 may generate a plurality of powers havingdifferent voltage levels or different current levels by adjusting avoltage level or a current level of the power supplied from the externalpower source or the battery 189. The power adjuster 220 may adjust thevoltage level or the current level of the power supplied from theexternal power source or the battery 189 into a different voltage levelor current level appropriate for each of some of the components includedin the electronic device 101. The power adjuster 220 may be implementedin the form of a low drop out (LDO) regulator or a switching regulator.The fuel gauge 230 may measure use state information about the battery189 (e.g., a capacity, a number of times of charging or discharging, avoltage, or a temperature of the battery 189).

The power management module 188 may determine, using, for example, thecharging circuitry 210, the power adjuster 220, or the fuel gauge 230,charging state information (e.g., lifetime, over voltage, low voltage,over current, over charge, over discharge, overheat, short circuit orshort, or swelling) related to the charging of the battery 189 based atleast in part on the measured use state information about the battery189. The power management module 188 may determine whether the state ofthe battery 189 is normal or abnormal based at least in part on thedetermined charging state information. If the state of the battery 189is determined to be abnormal, the power management module 188 may adjustthe charging of the battery 189 (e.g., reduce the charging current orvoltage, or stop the charging). At least some of the functions of thepower management module 188 may be performed by an external controldevice (e.g., the processor 120).

The battery 189 includes a protection circuit module (PCM) 240. The PCM240 may perform one or more of various functions (e.g., a pre-cutofffunction) to prevent a performance deterioration of, or a damage to, thebattery 189. The PCM 240, additionally or alternatively, may beconfigured as at least part of a battery management system (BMS) capableof performing various functions including cell balancing, measurement ofbattery capacity, count of a number of charging or discharging,measurement of temperature, or measurement of voltage.

At least part of the charging state information or use state informationregarding the battery 189 may be measured using a corresponding sensor(e.g., a temperature sensor) of the sensor module 176, the fuel gauge230, or the power management module 188. The corresponding sensor (e.g.,a temperature sensor) of the sensor module 176 may be included as partof the PCM 240, or may be disposed near the battery 189 as a separatedevice.

An electronic device (e.g., an electronic device 801 of FIG. 8)according to an embodiment of the disclosure may include a battery(e.g., a battery 830 of FIG. 8), a PMIC (e.g., a PMIC 820 of FIG. 8)configured to control a charging status of the battery 830, a coil(e.g., a coil 850 of FIG. 8), a wireless power circuit (e.g., a wirelesscharging IC 840 of FIG. 8) electrically connected to the coil 850, acommunication circuit (e.g., a communication circuit 841 of FIG. 8)electrically connected to the coil (e.g., the coil 850 of FIG. 8), and aprocessor (e.g., a controller 810 of FIG. 8), wherein the controller 810is configured to, when the wireless charging IC 840 is in a Tx mode,transmit a wireless power signal through the coil 850 by using thewireless charging IC 840, and transmit a signal obtained byFSK-modulating a transmission device parameter by using thecommunication circuit 841, to an external electronic device 802 throughthe coil 850, and, when the wireless charging IC 840 is in an Rx mode,receive wireless power by using the wireless charging IC 840 to chargethe battery 830, and transmit a signal obtained by ASK-modulating areception device parameter by using the communication circuit 841, tothe external electronic device 802 through the coil 850. The wirelesspower signal may be a wireless signal of a band of 110 kHz to 190 kHz.The controller 810 may be configured to, when the wireless charging IC840 is in the Tx mode, FSK-modulate the transmission device parameter toa signal of a band of around Δ0.2% to 5% as compared with the band ofthe wireless power signal, by using the communication circuit 841. Thecontroller 810 may be configured to, when the wireless charging IC 840is in Tx mode, set a depth including a scaling factor to 0, andFSK-modulate the transmission device parameter to a signal of a bandaround Δ0.3% as compared with the band of the wireless power signal. Thecontroller 810 may be configured to, when the wireless power circuit isin Tx mode, set a depth including a scaling factor to 3, andFSK-modulate the transmission device parameter to a signal of a bandaround Δ3.2% as compared with the band of the wireless power signal. Thetransmission device parameter may include at least one of identificationinformation on the electronic device 801, information on the battery830, information on a travel adapter (TA) connected to the electronicdevice 801, information on electric power which is supplied based on theinformation on the battery 830 and the information on the TA, orinformation on a transmission mode. The controller 810 may be configuredto, when the wireless charging IC 840 is in the Tx mode, receive aresponse signal on a signal obtained by modulating the transmissiondevice parameter, from the external electronic device 802, and transmita specific wireless power signal determined based on the responsesignal, through the coil 850. The controller 810 may be configured to,when the wireless charging IC 840 is in the Rx mode, ASK-modulate thereception device parameter to a signal having a voltage change of Δ1% to30% as compared with the voltage of the received wireless power, byusing the communication circuit 841. The reception device parameter mayinclude at least one of information on a request for change of acharging mode (a voltage, a current, electric power), identificationinformation on the electronic device 801, information on electric powerthat may be received, information on a state of received electric power,or information on the battery 830.

Various embodiments of the disclosure may relate to a method for sharing(transmitting) electric power between electronic devices by using awireless power transmission technology. The electronic device may adjusttransmission power by controlling a charging circuit based on chargingelectric energy of an external electronic device that receives wirelesspower. The electronic device can transmit electric power to an externalelectronic device (e.g., a smartphone) that requires relatively highpower during wireless charging or can transmit electric power to theexternal electronic device (e.g., a wearable device) that requiresrelatively low power during wireless charging, and may adjusttransmission power based on the kind of the external electronic device.

FIGS. 3A and 3B are an illustration and a block diagram of wirelesslysharing electric power between a first electronic device and a secondelectronic device according to an embodiment.

Referring to FIGS. 3A and 3B, although both of a first electronic device301 (e.g., the electronic device 101 of FIG. 1) and a second electronicdevice 302. (e.g., the electronic device 102 of FIG. 1) may be devicesthat may wirelessly transmit and receive electric power, one of the twoelectronic devices may be an electronic device that can only receivewireless power. In the disclosure, a description is provided withreference to the first electronic device 310 and the second electronicdevice 302 is described as an external electronic device, but the secondelectronic device 302 may have the same configuration as that of thefirst electronic device 301 or a configuration in which only a wirelesspower transmission function is removed.

The first electronic device 301 may include a coil 350, a wirelesscharging IC 340, a PMIC 320 (e.g., a power management module 188 of FIG.2), a battery 330 (e.g., a battery 189 of FIG. 1), an external powersource 303 (e.g., a USB), and/or a controller 310 (e.g., a processor 120of FIG. 1).

The coil 350 may be spirally formed in a flexible PCB (FPCB).

The wireless charging IC 340 may include a full bridge circuit. Forexample, the wireless charging IC 340 may perform a control such that afull bridge circuit is driven as an inverter (DC→AC) in a wireless powertransmission operation, and may perform a control such that the fullbridge circuit is driven as a rectifier (AC→DC) in a wireless powerreceiving operation.

The wireless charging IC 340 may exchange information, which isnecessary for wireless power transmission, through in-band communicationwith the second electronic device 302 according to at least some of theWireless Power Consortium (WPC) standards (or non-standards). Forexample, the in-band communication may be a scheme in which data may beexchanged between the first electronic device 301 and the secondelectronic device 302 through frequency or amplitude modulation of awireless power transmission signal in a situation of transmittingwireless power between the coils 350. The communication between thefirst electronic device 301 and the second electronic device 302 may beout-band communication. For example, the out-band communication isdifferent from a wireless power signal, and may be short-rangecommunication such as near field communication (NFC), Bluetooth, orWi-Fi.

The PMIC 320 may include a charger function of charging wired andwireless input power in the battery 330, a function of communicating(e.g., a USB battery charging spec, USB power delivery (PD)communication, adaptive fast charge (AFC) communication, and/or quickcharge (QC) communication) with an external power source device (e.g., aTA) connected to a USB terminal, a function of supplying necessaryelectric power to a system or supplying electric power that is suitablefor voltage levels that are necessary for the elements, and/or afunction of supplying electric power to the wireless charging IC 340 inthe wireless power transmission mode.

The external power sources 303 and 304 may be terminals that follow theUSB standards. For example, the external power sources 303 and 304 maybe interfaces for USB charging and/or on-the-go (OTG) power supply. Anexternal power source (a TA or a battery pack) may be connected to theexternal power sources 303 and 304.

The controller 310 may control wired/wireless charging of the firstelectronic device and USB communication with the second electronicdevice 302, and/or communication (e.g., USB PD, USB battery chargingrevision 1.2 (BC1.2), AFC, and/or QC) with the second electronic device302 in an integrated way according to the situation of the firstelectronic device 301. For example, BC1.2 or PD may be an interface thatcommunicates with an external power source (e.g., the TA), and thecontroller 310 may control communication with the external power source.For example, the situation of the first electronic device 301 mayinclude the temperature of the first electronic device 301 and/or thecapacity of the battery 330 of the first electronic device 301.

The first electronic device 301 may be operated in a wireless power Txmode by using the battery 330. The first electronic device 301 maycharge power that is left after external power is utilized first in theTx mode, in the battery 330, when the wired power supplying device isconnected to the first electronic device 301. When the wired powersupplying device is connected to the first electronic device 301, thefirst electronic device 301 may supply external power (e.g., electricpower) to the wireless charging IC 340, and may supply at least aportion of the remaining power (e.g., electric power) to the battery330.

Herein, the state in which the electronic device (e.g., the firstelectronic device 301 of FIG. 3) is operated in a wireless power Tx modemay indicate a state in which the electronic device wirelessly transmitselectric power to an external electronic device (e.g., the secondelectronic device 302 of FIG. 3) by using the coil 350. The state inwhich the electronic device 301 is operated in a wireless power Rx modemay indicate a state in which the electronic device 301 wirelesslyreceives electric power from the external electronic device (e.g., thesecond electronic device 302 of FIG. 3) through the coil 350, andchanges the battery 330 by using the wirelessly received power.

FIG. 4 is a cross-sectional view of an electronic device 400 accordingto an embodiment.

Referring to FIG. 4, the electronic device 400 (e.g., the electronicdevice 101 of FIG. 1) includes a housing 405 that accommodates and fixesone or more parts, or a cover 409 coupled to the housing 405 on a rearsurface of the electronic device 400. For example, the parts include adisplay panel 411, a board 401, a battery 407 (e.g., a first battery 189of FIG. 1), a camera 403, and an FPCB 415, which are located in theinterior of the housing 405.

The display panel 411 may be located on the front surface of theelectronic device, and a glass (a window cover) 410 may be attached tothe upper surface of the display panel 411. The display panel 411 may beintegrally formed with a touch sensor or a pressure sensor. The touchsensor or the pressure sensor may be separated from the display panel411. For example, the touch sensor may be located between the glass 410and the display panel 411.

Parts, such as a communication module (e.g., the communication module190 of FIG. 1) or a processor (e.g., the processor 120 of FIG. 1) may bemounted on the board 401. The board 401 may be realized by using atleast one of a PCB or an FPCB. The board 401 may be operated as a groundplate that may ground a loop antenna 417.

The cover 409 may be divided into a conductive area including aconductive material and a nonconductive area including a nonconductivematerial. For example, the cover 409 may be divided into a conductivearea, and a nonconductive area located on one side or opposite sides ofthe conductive area. One or more openings 421 for exposing some parts ofthe electronic device 400 to the outside may be formed in the cover 409.For example, the cover 409 may include one or more openings 421 forexposing a camera 403, a flash, or a sensor (e.g., a fingerprintsensor).

The FPCB 415 may be attached to a lower surface of the cover 409. One ormore loop antennas 417 may be mounted on the FPCB 415, and the FPCB 415may be located to be electrically insulated from the conductive area ofthe cover 409.

The one or more loop antennas 417 may be formed in the same type. Forexample, the one or more loop antennas 417 may be formed of planarcoils. Some of the one or more loop antennas 417 may be formed of planarcoils, and the others may be formed of solenoid type coils.

The one or more loop antennas 417 may include wireless charging coils,and the wireless charging coils may have spiral patterns.

Magnetic field shielding layers (a shielding sheet 422 and a graphitesheet 423) may be formed on one side of the one or more loop antennas417. For example, the magnetic field shielding layers 422 and 423 canprevent abnormal operations of the other electronic parts byconcentrating the direction of the magnetic field generated from thecoil on the rear side (e.g., the Z direction of FIG. 4) of theelectronic device 400 and restraining formation of the magnetic field inthe interior of the electronic device 400.

FIG. 5 is a block diagram of a charging circuit 530 in an electronicdevice 501 according to an embodiment.

Referring to FIG. 5, the electronic device 501 (e.g., the electronicdevice 101 of FIG. 1) includes a battery 510 (e.g., the battery 189 ofFIG. 1), a wired interface 521, a wireless interface 525, and thecharging circuit 530.

The battery 510 may be mounted in the housing (e.g., the housing 405 ofFIG. 4) of the electronic device 501, and may be charged. The battery510, for example, may include a lithium-ion battery, a rechargeablebattery, and/or a solar battery.

The wired interface 521 and the wireless interface 525 may be mounted onportions of the housing of the electronic device 501, and may beconnected to a first external device 502 and a second external device503, respectively. The wired interface 521, for example, may include aUSB connector 521-1, may be connected to the first external device 502through the connector 521-1, and may be an interface for USB chargingand/or an OTG power supply, or an external power source (a TA, a batterypack, or the like) may be connected to the wired interface 521. Thewireless interface 525 may include a coil 525-1 (e.g., a conductivepattern) (e.g., one or more loop antenna 417 of FIG. 4) and atransmission/reception integrated chip (TRX IC) 525-2, and maywirelessly transmit and receive electric power to and from the secondexternal device 503 through the conductive pattern 525-1 and the TRX IC525-2. In wireless power transmission, electric power may be transmittedand received by using a wireless power transmission scheme, such as amagnetic field induction coupling scheme, a resonance coupling scheme,or a combination thereof. The conductive pattern 525-1 may include afirst conductive pattern for wirelessly transmitting electric power, anda second conductive pattern for wirelessly receiving electric power.

The first external device 502 may be an external device that may beconnected in a wired scheme, and may be a wired power supplying deviceor a wired power receiving device. The wired power receiving device maybe an OTG device. The OTG device may be a device, such as a mouse, akeyboard, a USB memory, and an accessory, which is connected to theelectronic device to receive electric power. Then, the electronic devicemay be operated in an OTG mode for supplying external electric power tothe USB terminal. The wired power supplying device may be a device, suchas a TA, which is connected to the electronic device by wire to supplyelectric power to the electronic device. The wired power receivingdevice may be connected to the electronic device 501 by wire to receiveelectric power from the electronic device 501 to be used as an internalpower source, and may charge another battery provided in the wired powerreceiving device. The first external device connected to the electronicdevice 501 through the wired interface 521 may include a wiredhigh-voltage (HV) device (e.g., a device that assists AFC or QC. Whenthe wired HV device is connected to the connector, electric power of avoltage (e.g., 9 V) that is higher than a voltage (e.g., 5 V) suppliedfrom the battery 510 may be supplied to, or received from, the wired HVdevice.

The second external device 503 may include a wireless power supplyingdevice or a wireless power receiving device. The wireless powersupplying device may be a device, such as a wireless charging pad, whichwirelessly supplies electric power to the electronic device 501 by usingthe first conductive pattern. The wireless power receiving device may bea device that may wirelessly receive electric power supplied from theelectronic device 501, by using the second conductive pattern, andcharges the received electric power in another battery included in thewireless power receiving device. The second external device 503connected to the electronic device 501 through the wireless interface525 may include a wireless HV device (e.g., a device that assists AFC orQC. The wireless HV device may include a wireless charging pad thatassists QC. The wireless charging pad may determine whether QC will beperformed, by communicating with the TRX IC 525-2 through in-bandcommunication, or may determine whether QC will be performed, by using aseparate communication module (Bluetooth or ZigBee). For example, theelectronic device 501 may request charging of a high voltage of 9 V,from the wireless charging pad through the TRX IC 525-2, and mayidentify whether QC is possible, through communication with theelectronic device 501 according to the request for HV charging by theelectronic device 501. If it is identified that QC is possible, thewireless charging pad may supply electric power of 9V to the electronicdevice 501.

The charging circuit 530 may be electrically connected to the battery510, and may be configured to electrically connect the wired interface521 and the wireless interface 525, the battery 510 and the wiredinterface 521, and the battery 510 and the wireless interface 525. Thecharging circuit 530 may be configured to electrically connect thebattery 510 and the conductive pattern (e.g., the first conductivepattern) to wirelessly transmit electric power to the second externaldevice 503 (e.g., the wireless power receiving device), and toelectrically connect the battery 510 and the connector 521-1 to transmitelectric power to the first external device 502 (e.g., the wired powerreceiving device) by wire while wirelessly transmitting electric powerto the outside. For example, the charging circuit 530 may change a firstpower generated by the battery 510 to a second power that is greaterthan the first power, and may transmit a third power that is at least aportion of the second power to the wireless power receiving devicethrough the first conductive pattern and may transmit a fourth powerthat is at least a portion of the second power to the OTG device or thewired power receiving device through the connector 521-1.

The charging circuit 530 may include an interface controller 529, afirst switch 532, a second switch 534, a control logic 536, a switchgroup 538, and/or a charging switch 539.

The interface controller 529 may determine the kind of the firstexternal device 502 connected to the wired interface 521, and maydetermine whether QC is assisted through AFC communication with thefirst external device 502. The interface controller 529 may include amicro USB interface IC (MUIC) or quick charging (e.g., AFC or QC)interface. For example, the MUIC may determine whether the firstexternal device 502 connected to the wired interface 521 is a wiredpower supplying device or a wired power receiving device. For example,the QC interface may determine whether QC is assisted throughcommunication with the first external device 502. When QC is assisted,the first external device 502 may increase transmitted/received electricpower. For example, if QC is assisted when the first external device 502is a wired power supplying device that generally transmits electricpower of 10 W (5 V/2 A), electric power of 15 W (9 V/1.6 A) may betransmitted.

The first switch 532 may include one or more switches, and may controlan output of electric power to a device (e.g., the OTG device) connectedthrough the wired interface 521 or the wired power receiving device, andan input of electric power from the wired power supplying device. Forexample, the first switch 532 may be operated in an on state such thatelectric power is output to the OTG device or the wired power receivingdevice and electric power is input from the wired power supplyingdevice, and may be operated in an off state such that electric power isnot output to the OTG device or the wired power receiving device andelectric power is not input from the wired power supplying device.

The second switch 534 may include one or more switches, and may controlan input and an output of electric power to and from the wireless powersupplying device and the wireless power receiving device through thewireless interface 525, for example, the conductive pattern 525-1 andthe TRX IC 525-2. For example, the second switch 534 may be operated inan on state such that electric power may be input and output to and fromthe wireless power supplying device or the wireless power receivingdevice, or may be operated in an off state such that electric power maybe neither input nor output to and from the wireless power supplyingdevice or the wireless power receiving device.

The control logic 536 may perform a control such that the electric powerinput from at least one of the first switch 532 and the second switch534 is converted to a charging voltage and a charging current that aresuitable for charging of the battery 510, a control such that theelectric power from the battery 510 is converted to a charging voltageand a charging current that are suitable for charging of other batteriesof the external devices connected to the first switch 532 and the secondswitch 534, respectively, and a control such that the electric powerfrom the battery 510 is converted to a voltage and a current that aresuitable for being used in the external device.

The control logic 536 may perform a control such that the chargingcircuit 530 transmits power by the battery 510 to the outsideselectively wirelessly or by wire. The control logic 536 may perform acontrol such that the electric power is transmitted to the firstexternal device 502 and/or the second external device 503 through thecharging circuit 530, or the electric power is received from the firstexternal device 502 and/or the second external device 503.

The control logic 536 may perform a control such that the battery 510 ischarged by using the electric power received from the wired powersupplying device when the wired power supplying device is connected. Thecontrol logic 536 may perform a control such that an OTG function isperformed when the OTG device is connected. The control logic 536 mayperform a control such that the battery 510 is charged by receivingelectric power from the wireless power supplying device when the wiredpower supplying device is connected. The control logic 536 may perform acontrol such that the battery 510 is charged by receiving the electricpower from the wireless power supplying device and the OTG function isperformed as well when the wired power supplying device is connected tothe OTG device. The control logic 536 may perform a control such thatelectric power is supplied to the wireless power receiving device byusing the electric power of the battery 510 when the wireless powerreceiving device is connected. The control logic 536 may perform acontrol such that the battery 510 is charged and the wireless powerreceiving device is supplied with electric power as well by receivingelectric power from the wired power supplying device when the wiredpower supplying device and the wireless power receiving device areconnected to each other. The control logic 536 may perform a controlsuch that the OTG function is performed and electric power is suppliedto the wireless power receiving device by using the electric power ofthe battery as well when the OTG device and the wireless power receivingdevice are connected to each other.

The switch group 528 may boost (↑) or buck (↓) the voltage of thebattery 510 to provide a constant current to the system (e.g., thesystem 520 that supplies electric power to the modules of the electronicdevice 501) or provide a constant current to the connected externaldevice, or may boost (↑) or buck (↓) the charging voltage provided toprovide a charging current to the battery 510. The switch group 528 mayinclude a buck/boost converter.

The charging switch 539 may detect an amount of charging currents, andmay stop charging of the battery 510 during overcharging or overheating.

The electronic device 501 may include a display (e.g., the displaydevice 160 of FIG. 1). The display 160 may display a user interfaceconfigured to control at least a portion of the charging circuit 530.The display 160 may receive a user input that causes electric power fromthe battery 510 to be transmitted to the external device wirelessly orby wire. The display 160 may display one or more external devicesconnected to the electronic device 501, may display the residual powerlevel of the battery of the connected external device, or may displaywhether electric power is being supplied to the connected externaldevice or electric power is being received from the connected externaldevice. When a plurality of external devices are connected to thedisplay 160 and electric power is provided to the plurality of externaldevices, a screen, through which distribution of electric power providedto the plurality of external devices may be adjusted, may be displayed,and a screen, through which a power provision priority of the pluralityof external devices may be selected, may be displayed. The display 160may display a screen that displays information on the display 160 of theconnected external device. At least some of the contents displayed onthe display 160 may be changed according to a signal received from theconnected external device.

FIG. 6A is an illustration of wirelessly charging a wearable device 602by using a wireless charging function of an electronic device 601, andFIG. 6B is an example of a user scenario of wirelessly charging awearable device 602 by using a wireless charging function of theelectronic device 601. Although FIGS. 6A and 6B illustrate examples inwhich the wireless power receiving device 602 is a wearable device 602(e.g., a smart watch, a wireless earphone, or a wireless headset), thewireless power receiving device 602 may be various electronic devicesthat may be wirelessly charged by receiving relatively low electricpower (e.g., 5 V/3.75 W).

Referring to FIG. 6A, the electronic device 601 (e.g., the electronicdevice 101 of FIG. 1) may activate a wireless power Tx mode based on auser input, and may wirelessly supply electric power to the wearabledevice 602 by using electric power of the battery (e.g., the battery 510of FIG. 5) if the wireless power Tx mode is activated. For example, theuser input may include a touch input of a user through the display(e.g., the display device 160 of FIG. 1) or an operation of a physicalbutton disposed outside the housing (e.g., the housing 405 of FIG. 4).

Referring to FIG. 6B, when a wired power supplying device 603 (e.g., aTA) is connected to the electronic device 601 according to an embodimentof the present disclosure, the electronic device 601 may receiveelectric power from the wired power supplying device 603 to supplyelectric power to the wearable device 602 and charge the battery 510 aswell.

If the wireless power Tx mode is activated, the electronic device 601may perform in-band communication with the external device 602 accordingto specific standards (e.g., WPC standards), and may exchangeinformation that is necessary for wirelessly transmitting electric powerto the external device 602. For example, wireless charging according tothe WPC standards may include a ping operation, anidentification/configuration operation, or a power transfer operation.The ping operation may be an operation of determining whether thewireless power receiving device (e.g., the wearable device 602 of FIG.6A) is positioned on a wireless charging pad, and for example, may be anoperation of determining whether the electronic device 601 is close tothe external device 602 (e.g., the wearable device 602 of FIG. 6A). Theidentification/configuration operation may be an operation of setting anamount of transmission power through communication between the wirelesspower transmitting device (e.g., the electronic device 601 of FIG. 6A)and the wireless power receiving device (e.g., the wearable device 602of FIG. 6A), and for example, may be an operation of determiningelectric power, which will be wirelessly transmitted to the externaldevice 602, by the electronic device 601. The power transfer operationmay be an operation of wirelessly transmitting the specific electricpower, and for example, may be an operation of wirelessly transmittingspecific electric power to the external device 602 by the electronicdevice 601. The electronic device 601 may wirelessly transmit electricpower by performing the three operations if the wireless power Tx modeis activated, and may not perform the three operations if the wirelesspower Tx mode is not activated. The electronic device 601 may display anotification that indicates that the wireless power Tx mode isdeactivated, through the display 160, if the Tx mode is deactivated.

If the wireless power Tx mode is activated, the electronic device 601may identify the external device 602 according to specific standards(e.g., WPC standards), and may determine specific electric powercorresponding to the identified external device 602. For example, theelectronic device 601 may identify that the external device 602 is thewearable device 602, and may determine second specified power (e.g., 5V/3.75 W) corresponding to the wearable device 602. The electronicdevice 601 may wirelessly transmit specific electric power by using anexternal power source provided from the wired power supplying device603. For example, the electronic device 601 may FSK-modulate atransmission device parameter, and may transmit a signal obtained byFSK-modulating the transmission device parameter to the external device602, together with a power signal. The electronic device 601 may receivea response to the signal obtained by FSK-modulating the transmissiondevice parameter from the external device 602, and may determinespecific electric power corresponding to the external device 602 atleast based on the received response. The electronic device 601 maywirelessly transmit specific electric power to the external device 602.

FIG. 7A is an illustration of wirelessly charging an external electronicdevice 702 by using a wireless charging function of an electronic device701, and FIG. 7B is an illustration of wirelessly charging the externalelectronic device 702 by using the wireless charging function of theelectronic device 701. Although FIGS. 7A and 7B illustrate examples inwhich the external electronic device (e.g., a wireless power receivingdevice) 702 is a smartphone, the wireless power receiving device 702 maybe various electronic devices that may be wirelessly charged byreceiving relatively high electric power (e.g., 7.5 V/7.5 W).

Referring to FIG. 7A, the electronic device 701 (e.g., the electronicdevice 101 of FIG. 1) may activate a wireless power Tx mode based on auser input, and may wirelessly supply electric power to the externalelectronic device 702 by using electric power of the battery 510 (e.g.,the batter 510 of FIG. 5) if the wireless power Tx mode is activated.

Referring to FIG. 7B, when a wired power supplying device (e.g., AFC, aQC, or PD) (with reference to 9 V/15 W) for QC is connected to theelectronic device 701 according to an embodiment of the presentdisclosure, the electronic device 701 may receive electric power fromthe wired power supplying device 703 to supply electric power to theexternal electronic device 702 and charge the battery 510 as well. Forexample, only the wired power supplying device 703 that supports QC isconnected to the electronic device 701, the electronic device 701 mayreceive electric power from the wired power supplying device 703 andwirelessly supply the electric power to the external electronic device702.

If the wireless power Tx mode is activated, the electronic device 701may identify the external device 702 according to specific standards(e.g., WPC standards), and may determine specific electric powercorresponding to the identified external device 702. For example, theelectronic device 701 may identify that the external device 702 is asmartphone, and may determine first specified power (e.g., 7.5 V/7.5 W)corresponding to the smartphone. The electronic device 701 maywirelessly transmit specific electric power by using an external powersource provided from the wired power supplying device 703. For example,the electronic device 701 may FSK-modulate a transmission deviceparameter, and may transmit a signal obtained by FSK-modulating thetransmission device parameter to the external device 702, together witha power signal. The electronic device 701 may receive a response to thesignal obtained by FSK-modulating the transmission device parameter fromthe external device 702, and may determine specific electric powercorresponding to the external device 702 at least based on the receivedresponse. The electronic device 701 may wirelessly transmit specificelectric power to the external device 702.

FIG. 8 is a block diagram of a wireless power circuit of an electronicdevice 801 in a Tx mode according to an embodiment.

Referring to FIG. 8, the electronic device 801 (e.g., the electronicdevice 301 of FIG. 3) includes a coil 850 (e.g., the coil 350 of FIG.3), a wireless charging IC 840 (e.g., the wireless charging IC 840 ofFIG. 3), a PMIC 820 (e.g., the PMIC 320 of FIG. 3), a battery 830 (e.g.,the battery 330 of FIG. 3), an external power source (e.g., AFC, QC, PD,or an USB) 803, and/or a controller 810 (e.g., the processor 120 of FIG.1).

The wireless charging IC 840 may wirelessly transmit and receiveinformation, which is necessary for wireless power transmission, throughin-band communication with an external electronic device 802 (e.g., thesecond electronic device 302 of FIG. 3) according to the WPC standards.For example, the in-band communication may indicate that data aretransmitted to the external electronic device 802 though a frequencymodulation of a wireless power transmission signal in the Tx mode.

The wireless charging IC 840 may include a radio frequency (RF) powergenerator/regulator 842 and a communication circuit 841.

The RF power generator/regulator 842 may be operated as an RF powergenerator (inverter) when the electronic device 801 is operated in theTx mode.

The communication circuit 841 may be a circuit configured to communicatewith the external electronic device 802. For example, the communicationcircuit 841 may generate a signal obtained by FSK-modulating atransmission device parameter to communicate with the externalelectronic device 802 when the electronic device 801 is operated in theTx mode.

The communication circuit 841 may communicate with the communicationcircuit of the external electronic device 802 by using a frequency thatis the same as or close to a frequency which is used by the coil 850 totransmit electric power. For example, the communication circuit 841 mayFSK-modulate a transmission device parameter, and may transmit a signalobtained by FSK-modulating the transmission device parameter to theexternal device 802, together with a power signal. For example, thecommunication circuit 841 may transmit data to the external electronicdevice 802 that is a power receiving device (e.g., a sink device) byusing FSK modulation.

The power signal that is transmitted when the electronic device 801 isoperated in the Tx mode may be a wireless signal of a band of 110 kHz to190 kHz. The communication circuit 841 may generate a signal of a bandaround Δ0.2% to 5% as compared with the band of the power signal, forexample, 104.5 kHz to 199.5 kHz. For example, when the FSK modulation isperformed, the communication circuit 841 may modulate a positive signalsuch that the positive signal is a signal of a frequency (e.g., 110.7kHz) that is greater than 110 kHz when the power transmission frequencyis a frequency that is greater than the power signal frequency, forexample, 110 kHz. For example, the communication circuit 841 maymodulate a negative signal such that the negative signal is a signal ofa frequency (e.g., 109.6 kHz) that is less than 110 kHz when the powertransmission frequency is a frequency that is less than the power signalfrequency, for example, 110 kHz).

When the electronic device 801 is in a Tx mode, the communicationcircuit 841 may set a depth including a scaling factor for calculatingan FSK modulation depth to 0, and may generate a signal of a band aroundΔ0.3% as compared with the power signal.

When the electronic device 801 is in a Tx mode, the communicationcircuit 841 may set a depth including a scaling factor for calculatingan FSK modulation depth to 3, and may generate a signal of a band aroundΔ3.2% as compared with the power signal.

The transmission device parameter transmitted when the electronic device801 is operated in the Tx mode is a capacity packet, and may includeidentification information on the electronic device 801, information onthe battery 830, information on a TA connected to the electronic device801, information on electric power which is supplied based on theinformation on the battery 830 and the information on the TA, orinformation on a transmission mode (e.g., a voltage, a current, and anelectric power).

FIG. 9 is a block diagram of a wireless power circuit of an electronicdevice in an Rx mode according to an embodiment. The electronic deviceillustrated in FIG. 9 may have a configuration that is the same as orsimilar to the electronic device illustrated in FIG. 8. In FIG. 9, theelements that are substantially the same as those of FIG. 8 are denotedby the same reference symbols, and hereinafter, only an operationcorresponding to the case in which the wireless power circuit is in anRx mode is described below.

Referring to FIG. 9, the wireless charging IC 840 may wirelesslytransmit information, which is necessary for wireless powertransmission, through in-band communication with an external electronicdevice 802 (e.g., the second electronic device 302 of FIG. 3) accordingto the WPC standards. For example, the in-band communication mayindicate that data are transmitted to the external electronic device 802though an amplitude modulation in the Rx mode.

The RF power generator/regulator 842 may be operated as a rectifier whenthe electronic device is operated in the Rx mode.

The communication circuit 841 may be a circuit configured to communicatewith the external electronic device 802. For example, the communicationcircuit 841 may generate a signal obtained by ASK-modulating a receptiondevice parameter to communicate with the external electronic device 802when the electronic device 801 is operated in the Rx mode.

The communication circuit 841 may communicate with the communicationcircuit of the external electronic device 802 by using a frequency thatis the same as or close to a frequency, which is used by the coil 850 toreceive electric power. The communication circuit 841 may ASK-modulatethe reception device parameter, and may transmit a signal obtained byASK-modulating the reception device parameter. For example, thecommunication circuit 841 may transmit data to the external electronicdevice 802 that is a power transmitting device (e.g., a source device)by using ASK modulation.

The communication circuit 841 may generate a signal having a voltagechange of Δ1% to 30% as compared with the voltage of a power signalreceived when the electronic device 801 is operated in the Rx mode. Forexample, the communication circuit 841 may control a circuit connectedto the coil when the electronic device 801 is operated in the Rx mode toASK-modulate the reception device parameter such that the externalelectronic device 802 that is the power transmitting device (e.g., asource device) recognizes that a load is changed in the externalelectronic device 802.

The reception device parameter transmitted when the electronic device801 is operated in the Rx mode may include information on a request forchange of a charging mode (e.g., a voltage, a current, electric power),identification information on the electronic device 801, information onelectric power that may be received, information on the state ofreceived electric power, or information on the battery 830.

A method for driving an electronic device (e.g., the electronic device801 of FIG. 8) according to various embodiments of the disclosure mayinclude, an operation of, when a wireless power circuit (e.g., thewireless charging IC 840 of FIG. 8) is in a Tx mode, transmitting awireless power signal through a coil (e.g., the coil 850 of FIG. 8) byusing the wireless charging IC 840, and transmitting a signal obtainedby FSK-modulating a transmission device parameter by using acommunication circuit (e.g., the communication circuit 841 of FIG. 8),to an external electronic device (e.g. the external electronic device802) through the coil 850, and an operation of, when the wirelesscharging IC 840 is in an Rx mode, receiving wireless power by using thewireless charging IC 840 to charge the battery 830, and transmitting asignal obtained by ASK-modulating a reception device parameter by usingthe communication circuit 841, to the external electronic device 802through the coil 850. The wireless power signal may be a wireless signalof a band of 110 kHz to 190 kHz. The operation of FSK-modulating thetransmission device parameter may include an operation of FSK-modulatingthe transmission device parameter to a signal of a band around Δ0.2% to5% as compared with the band of the wireless power signal, by using thecommunication circuit 841. The operation of FSK-modulating thetransmission device parameter may include setting a depth including ascaling factor to 0, and FSK-modulating the transmission deviceparameter to a signal of a band around Δ0.3% as compared with the bandof the wireless power signal. The operation of FSK-modulating thetransmission device parameter may include setting a depth including ascaling factor to 3, and FSK-modulating the transmission deviceparameter to a signal of a band around Δ3.2% as compared with the bandof the wireless power signal. The transmission device parameter includesat least one of identification information on the electronic device 801,information on the battery 830, information on a TA connected to theelectronic device 801, information on electric power which is suppliedbased on the information on the battery 830 and the information on theTA, or information on a Tx mode. The method may further include anoperation of, when the wireless charging IC 840 is in the Tx mode,receiving a response signal on a signal obtained by modulating thetransmission device parameter, from the external electronic device 802,and an operation of transmitting a specific wireless power signaldetermined based on the response signal, through the coil 850. Theoperation of ASK-modulating the reception device parameter may includeASK-modulating the reception device parameter to a signal having avoltage change of Δ1% to 30% as compared with the voltage of thereceived wireless power, by using the communication circuit 841.

FIG. 10 is a flowchart of a method of an electronic device according toan embodiment.

Referring to FIG. 10, in steps 1001 and 1002, the electronic device(e.g., the electronic device 801 of FIG. 8) may identify a wirelesscharging mode, and may identify whether the electronic device 801 is inthe Tx mode. The electronic device 801 may perform step 1003 in the Txmode and may perform step 1004 in the Rx mode.

In step 1003, the electronic device 801 may generate capacity data as atransmission device parameter in the Tx mode. For example, thetransmission device parameter is a capacity packet, and may includeidentification information on the electronic device 801, information onthe battery (e.g., the battery 830 of FIG. 8), information on a TAconnected to the electronic device 801, information on electric powerwhich is supplied based on the information on the battery 830 and theinformation on the TA, or information on a Tx mode (e.g., a voltage, acurrent, or electric power).

In step 1005, the electronic device 801 may transmit a signal obtainedby FSK-modulating the transmission device parameter by using thecommunication circuit 841, through the coil. For example, the electronicdevice 801 may FSK-modulate the transmission device parameter to asignal of a band around Δ0.2% to 5% as compared with the band of thewireless power signal, by using the communication circuit 841.

In step 1004, the electronic device 801 may generate information on arequest for a change of a charging mode (e.g., a voltage, a current, orelectric power), identification information on the electronic device801, information on electric power that may be received, information onthe state of received electric power, or information on the battery 830,as a reception device parameter in the Rx mode.

In step 1006, the electronic device 801 may transmit a signal obtainedby ASK-modulating the reception transmission device parameter to theexternal electronic device 802 by using the communication circuit 841,through the coil. For example, the electronic device 801 mayASK-modulate the reception device parameter to a signal having a voltagechange of Δ1% to 30% as compared with the voltage of the receivedwireless power, by using the communication circuit 841. For example, thecommunication circuit 841 may control a circuit connected to the coilwhen the electronic device is operated in the Rx mode to ASK-modulatethe reception device parameter such that the external electronic device802 that is the power transmitting device (e.g., a source device)recognizes that a load is changed in the external electronic device 802.

The electronic device may be one of various types of electronic devices.The electronic devices may include, for example, a portablecommunication device (e.g., a smartphone), a computer device, a portablemultimedia device, a portable medical device, a camera, a wearabledevice, or a home appliance. However, the electronic devices are notlimited to those described above.

Various embodiments of the present disclosure and the terms used hereinare not intended to limit the present disclosure to particularembodiments but include various changes, equivalents, or replacementsfor a corresponding embodiment. With regard to the description of theaccompanying drawings, similar reference numerals may be used to referto similar or related elements. A singular form of a noun correspondingto an item may include one or more of the things, unless the relevantcontext clearly indicates otherwise. Herein, each of such phrases as “Aor B,” “at least one of A and B,” “at least one of A or B,” “A, B, orC,” “at least one of A, B, and C,” and “at least one of A, B, or C,” mayinclude any one of, or all possible combinations of, the itemsenumerated together in a corresponding one of the phrases. As usedherein, such terms as “1^(st),” “2nd,” “first,” and “second” may be usedto simply distinguish a corresponding component from another component,but does not limit the components in other aspect (e.g., importance ororder). It is to be understood that if an element (e.g., a firstelement) is referred to, with or without the term “operatively” or“communicatively”, as “coupled with,” “coupled to,” “connected with,” or“connected to” another element (e.g., a second element), it indicatesthat the element may be coupled with the other element directly (e.g.,wiredly), wirelessly, or via a third element.

The term “module” may include a unit implemented in hardware, software,or firmware, and may interchangeably be used with other terms, forexample, “logic,” “logic block,” “part,” or “circuitry”. A module may bea single integral component, or a minimum unit or part thereof, adaptedto perform one or more functions. For example, a module may beimplemented in a form of an application-specific integrated circuit(ASIC).

Various embodiments as set forth herein may be implemented as software(e.g., the program 140) including one or more instructions that arestored in a storage medium (e.g., internal memory 136 or external memory138) that is readable by a machine (e.g., the electronic device 101).For example, a processor (e.g., the processor 120) of the machine (e.g.,the electronic device 101) may invoke at least one of the one or moreinstructions stored in the storage medium, and execute it, with orwithout using one or more other components under the control of theprocessor. This allows the machine to be operated to perform at leastone function according to the at least one instruction invoked. The oneor more instructions may include code generated by a complier or codeexecutable by an interpreter. The machine-readable storage medium may beprovided in the form of a non-transitory storage medium. Wherein, theterm “non-transitory” simply indicates that the storage medium is atangible device, but does not include a signal (e.g., an electromagneticwave), but this term does not differentiate between where data issemi-permanently stored in the storage medium and where the data istemporarily stored in the storage medium.

A method according to various embodiments of the disclosure may beincluded and provided in a computer program product. The computerprogram product may be traded as a product between a seller and a buyer.The computer program product may be distributed in the form of anon-transitory machine-readable storage medium (e.g., a compact discread only memory (CD-ROM)), or be distributed (e.g., downloaded oruploaded) online via an application store (e.g., PlayStore™), or betweentwo user devices (e.g., smart phones) directly. If distributed online,at least part of the computer program product may be temporarilygenerated or at least temporarily stored in the non-transitorymachine-readable storage medium, such as memory of the manufacturer'sserver, a server of the application store, or a relay server.

According to various embodiments, each component (e.g., a module or aprogram) of the above-described components may include a single entityor multiple entities. One or more of the above-described components maybe omitted, or one or more other components may be added. Alternativelyor additionally, a plurality of components (e.g., modules or programs)may be integrated into a single component. In such a case, theintegrated component may still perform one or more functions of each ofthe plurality of components in the same or similar manner as they areperformed by a corresponding one of the plurality of components beforethe integration. Operations performed by a module, a program, or anothercomponent may be carried out sequentially, in parallel, repeatedly, orheuristically, one or more of the operations may be executed in adifferent order or omitted, or one or more other operations may beadded.

While the present disclosure has been shown and described with referenceto certain embodiments thereof, it will be understood by those skilledin the art that various changes in form and details may be made thereinwithout departing from the scope of the present disclosure as defined bythe appended claims and their equivalents.

What is claimed is:
 1. An electronic device, comprising: a battery; apower management integrated circuit (PMIC) configured to control acharging status of the battery; a coil; a wireless power circuitelectrically connected to the coil; a communication circuit electricallyconnected to the coil; and a processor, which is configured to: when thewireless power circuit is in a transmission (Tx) mode, transmit awireless power signal through the coil by using the wireless powercircuit, and transmit a signal obtained by frequency shift keying(FSK)-modulating a transmission device parameter by using thecommunication circuit, to an external electronic device through thecoil, and when the wireless power circuit is in a reception (Rx) mode,receive wireless power by using the wireless power circuit to charge thebattery, and transmit a signal obtained by amplitude shift keying(ASK)-modulating a reception device parameter by using the communicationcircuit, to the external electronic device through the coil.
 2. Theelectronic device of claim 1, wherein the wireless power signal is awireless signal of a band of 110 kHz to 190 kHz.
 3. The electronicdevice of claim 1, wherein the processor is further configured to, whenthe wireless power circuit is in the Tx mode, FSK-modulate thetransmission device parameter to a signal of a band of around Δ0.2% to5% as compared with a band of the wireless power signal, by using thecommunication circuit.
 4. The electronic device of claim 3, wherein theprocessor is further configured to: when the wireless power circuit isin the Tx mode, set a depth including a scaling factor to 0, andFSK-modulate the transmission device parameter to a signal of a bandaround Δ0.3% as compared with the band of the wireless power signal. 5.The electronic device of claim 3, wherein the processor is furtherconfigured to: when the wireless power circuit is in the Tx mode, set adepth including a scaling factor to 3, and FSK-modulate the transmissiondevice parameter to a signal of a band around Δ3.2% as compared with theband of the wireless power signal.
 6. The electronic device of claim 1,wherein the transmission device parameter comprises at least one of:identification information on the electronic device, information on thebattery; information on a travel adapter (TA) connected to theelectronic device; information on electric power which is supplied basedon the information on the battery and the information on the TA; orinformation on the Tx mode.
 7. The electronic device of claim 6, whereinthe processor is further configured to: when the wireless power circuitis in the Tx mode, receive a response signal on a signal obtained bymodulating the transmission device parameter, from the externalelectronic device, and transmit a specific wireless power signaldetermined based on the response signal, through the coil.
 8. Theelectronic device of claim 1, wherein the processor is furtherconfigured to, when the wireless power circuit is in the Rx mode,ASK-modulate the reception device parameter to a signal having a voltagechange of Δ1% to 30% as compared with a voltage of the received wirelesspower, by using the communication circuit.
 9. The electronic device ofclaim 1, wherein, on a request for a change of a charging mode, thereception device parameter comprises at least one of: identificationinformation on the electronic device, information on electric power thatmay be received, information on a state of received electric power; orinformation on the battery, and wherein the charging mode includes avoltage, a current, or electric power.
 10. A method for driving anelectronic device, the method comprising: when a wireless power circuitis in a transmission (Tx) mode, transmitting a wireless power signalthrough a coil by using the wireless power circuit, and transmitting asignal obtained by frequency shift keying (FSK)-modulating atransmission device parameter by using a communication circuit, to anexternal electronic device through the coil; and when the wireless powercircuit is in a reception (Rx) mode, receiving wireless power by usingthe wireless power circuit to charge the battery, and transmitting asignal obtained by amplitude shift keying (ASK)-modulating a receptiondevice parameter by using the communication circuit, to the externalelectronic device through the coil.
 11. The method of claim 10, whereinthe wireless power signal is a wireless signal of a band of 110 kHz to190 kHz.
 12. The method of claim 10, wherein FSK-modulating thetransmission device parameter comprises FSK-modulating the transmissiondevice parameter to a signal of a band around Δ0.2% to 5% as comparedwith a band of the wireless power signal, by using the communicationcircuit.
 13. The method of claim 12, wherein FSK-modulating thetransmission device parameter further comprises: setting a depthcomprising a scaling factor to 0; and FSK-modulating the transmissiondevice parameter to a signal of a band around Δ0.3% as compared with theband of the wireless power signal.
 14. The method of claim 12, whereinFSK-modulating the transmission device parameter comprises: setting adepth comprising a scaling factor to 3; and FSK-modulating thetransmission device parameter to a signal of a band around Δ3.3% ascompared with the band of the wireless power signal.
 15. The method ofclaim 10, wherein the transmission device parameter comprises at leastone of: identification information on the electronic device; informationon the battery; information on a travel adapter (TA) connected to theelectronic device; information on electric power which is supplied basedon the information on the battery and the information on the TA; orinformation on the Tx mode.
 16. The method of claim 15, furthercomprising: when the wireless power circuit is in the Tx mode, receivinga response signal on a signal obtained by modulating the transmissiondevice parameter, from the external electronic device; and transmittinga specific wireless power signal determined based on the responsesignal, through the coil.
 17. The method of claim 10, whereinASK-modulating the reception device parameter comprises ASK-modulatingthe reception device parameter to a signal having a voltage change ofΔ1% to 30% as compared with a voltage of the received wireless power, byusing the communication circuit.